I am having a recent problem that I could use some advice on guys. I composed a large notebook full of equations and when I try to run it I don't get any output. When I write a short notebook it works fine. The larger one that won't run on either of the systems I use but will run on a friends system. Any idea why I don't get any output? One possible problem is that several of my variable are similar which Mathematica doesn't seem to like.